174 
SMITHSONIAN INSTITUTION 
PLATE 1 
(All figures not otherwise noted natural size) 
Dimerocrinus planus new species 
Fig. I. Complete crown of maximum size, with long stem; lo heavy arms. 
2, 3. Lateral and posterior views of two other crowns. 
4. Crown with more delicate structure. 
5. Calyx showing anal side. 
6. Basal view of crushed calyx showing IBB. 
7. ja. Large calyx with abnormal anal side, perhaps of this species ; has IBB invisible from 
side view; posterior and lateral views. 
Beech River formation; Decatur County, Tennessee. 
Dimerocrinus milliganae (Miller and Gurley) 
Fig. 8. Type specimen of “ Glyptaster” milliganae, formerly in the collection of Mrs. J. M. 
Milligan. 
Horizon and locality, same as last. 
Dimerocrinus nodobasis new species 
Fig. 9 . Oblique basal view of large crown, shoAving nodes on BB, and minute IBB concealed by 
top columnal. 
Qa. Another view of calyx, showing anal series. 
10. Basal view of smaller specimen. 
Horizon and locality, same as last. 
Dimerocrinus inornatus (Hall) 
Fig. II. Large calyx, from 1. post, radius, with strongly projecting basals. 
no. Basal view of same. 
12. Posterior view of smaller calyx. 
Waldron shale ; Hartsville, Indiana. 
Eudimerocrinus multibrachiatus new species 
Fig. 13. Nearly complete crown, with arms frequently branching, biserial above and below the 
bifurcations; basal and radial series surmounted by spinose cusps; IBB restricted to 
the column-facet. Anterior view. 
13a. Anal side of calyx, somewhat restored. 
T3&. The base, with column removed, to show relation of IBB. 
14. Another complete crown, seen from 1. post, radius. 
Beech River formation; Decatur County, Tennessee. 
Cyphocrinus gorbyi S. A. Miller 
Fig. 15. Lateral view of calyx, showing drooping of arm-bases, pinnule openings between them, 
and spiniferous tegmen. 
16. Dorsal view of another specimen, showing arrangement of plates and distribution of 
arms. 
17, 18. Ventral views of two specimens showing composition of tegmen, position of anus, and 
spiniferous ambulacrals. 
Laurel formation ; St. Paul, Indiana. 
genus and species indet 
Figs. 19, 20, 21, 22. Fragments of stem of unknown crinoid from the Laurel limestone, St. Paul, 
Indiana. 
